EXHAUST GAS ANALYSIS SYSTEM MOUNTED ON MOBILE OBJECT

摘要

The present invention includes an exhaust gas flow channel that permits passage of an exhaust gas, a diluent gas flow channel that permits passage of a diluent gas, a main flow channel that permits passage of a diluted exhaust gas, a diluted exhaust gas flow rate measurement mechanism disposed on the main flow channel, and a diluent gas flow rate measurement mechanism disposed on the diluent gas flow channel. The diluted exhaust gas flow rate measurement mechanism and the diluent gas flow rate measurement mechanism each have a pressure sensor section. Furthermore, a pressure sensitive element of the pressure sensor section in the diluted exhaust gas flow rate measurement mechanism, and a pressure sensitive element of the pressure sensor section in the diluent gas flow rate measurement mechanism, are oriented in an identical direction in order to reduce an influence of acceleration in association with movement of a mobile object.

主权项

1. An exhaust gas analysis system being configured to be mounted on a mobile object with an internal combustion engine, and configured to measure a target ingredient in an exhaust gas discharged from the internal combustion engine, the exhaust gas analysis system comprising:
an exhaust gas flow channel that permits passage of the exhaust gas; a diluent gas flow channel that permits passage of a diluent gas to dilute the exhaust gas; a main flow channel that permits passage of a diluted exhaust gas being a mixture of the exhaust gas and the diluent gas; a diluted exhaust gas flow rate measurement mechanism that is disposed on the main flow channel and measures a flow rate of the diluted exhaust gas; and a diluent gas flow rate measurement mechanism that is disposed on the diluent gas flow channel and measures a flow rate of the diluent gas, wherein the diluted exhaust gas flow rate measurement mechanism and the diluent gas flow rate measurement mechanism each have a pressure sensor section, and wherein a pressure sensitive element of the pressure sensor section in the diluted exhaust gas flow rate measurement mechanism and a pressure sensitive element of the pressure sensor section in the diluent gas flow rate measurement mechanism are oriented in an identical direction in order to reduce an influence of acceleration in association with movement of the mobile object.